While letting out your rode, gradually move your boat aft, or downstream, so that the chain or nylon rode doesn't pile up on top of itself. When you've reached at least 3:1 scope, secure the rode and gently back down, watching the rode or chain to see if it pulls tight. If the rode alternately pulls tight and then loosens, your anchor is skipping, and you need to reset. Pick a spot on land or a nearby marker as a reference point to make sure you're not moving aft as you back down. When set, let out even more scope if you can, and predict where your boat will swing if the tide or wind shifts. Back down again at this scope, making sure your anchor is well set before turning off your engine and leaving your boat.